|
Last change
on this file since 341 was
341,
checked in by krille_n_@…, 12 years ago
|
|
Changes:
- Fixed a bug from r323 in DisplayPrint.asm.
- Removed some unused code from XTIDECFG (undoing the change to Math.asm in r336 as part of it).
|
|
File size:
1.5 KB
|
| Line | |
|---|
| 1 | ; Project name : Assembly Library |
|---|
| 2 | ; Description : Functions for register operations. |
|---|
| 3 | |
|---|
| 4 | |
|---|
| 5 | ; Section containing code |
|---|
| 6 | SECTION .text |
|---|
| 7 | |
|---|
| 8 | ;-------------------------------------------------------------------- |
|---|
| 9 | ; Math_DivQWatSSBPbyCX |
|---|
| 10 | ; Parameters: |
|---|
| 11 | ; [SS:BP]: 64-bit unsigned divident |
|---|
| 12 | ; CX: 16-bit unsigned divisor |
|---|
| 13 | ; Returns: |
|---|
| 14 | ; [SS:BP]: 64-bit unsigned quotient |
|---|
| 15 | ; DX: 16-bit unsigned remainder |
|---|
| 16 | ; Corrupts registers: |
|---|
| 17 | ; AX |
|---|
| 18 | ;-------------------------------------------------------------------- |
|---|
| 19 | %ifndef EXCLUDE_FROM_XTIDECFG ; Not used in XTIDECFG |
|---|
| 20 | ALIGN JUMP_ALIGN |
|---|
| 21 | Math_DivQWatSSBPbyCX: |
|---|
| 22 | xor dx, dx |
|---|
| 23 | mov ax, [bp+6] ; Load highest divident WORD to DX:AX |
|---|
| 24 | div cx |
|---|
| 25 | mov [bp+6], ax ; Store quotient |
|---|
| 26 | |
|---|
| 27 | mov ax, [bp+4] |
|---|
| 28 | div cx |
|---|
| 29 | mov [bp+4], ax |
|---|
| 30 | |
|---|
| 31 | mov ax, [bp+2] |
|---|
| 32 | div cx |
|---|
| 33 | mov [bp+2], ax |
|---|
| 34 | |
|---|
| 35 | mov ax, [bp] |
|---|
| 36 | div cx |
|---|
| 37 | mov [bp], ax |
|---|
| 38 | ret |
|---|
| 39 | %endif |
|---|
| 40 | |
|---|
| 41 | |
|---|
| 42 | ;-------------------------------------------------------------------- |
|---|
| 43 | ; Math_DivDXAXbyCX |
|---|
| 44 | ; Parameters: |
|---|
| 45 | ; DX:AX: 32-bit unsigned divident |
|---|
| 46 | ; CX: 16-bit unsigned divisor |
|---|
| 47 | ; Returns: |
|---|
| 48 | ; DX:AX: 32-bit unsigned quotient |
|---|
| 49 | ; BX: 16-bit unsigned remainder |
|---|
| 50 | ; Corrupts registers: |
|---|
| 51 | ; Nothing |
|---|
| 52 | ;-------------------------------------------------------------------- |
|---|
| 53 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS OR EXCLUDE_FROM_XTIDECFG |
|---|
| 54 | ALIGN JUMP_ALIGN |
|---|
| 55 | Math_DivDXAXbyCX: ; This is currently unused (dead code) |
|---|
| 56 | xor bx, bx |
|---|
| 57 | xchg bx, ax |
|---|
| 58 | xchg dx, ax |
|---|
| 59 | div cx |
|---|
| 60 | xchg ax, bx |
|---|
| 61 | div cx |
|---|
| 62 | xchg dx, bx |
|---|
| 63 | ret |
|---|
| 64 | %endif |
|---|
Note: See
TracBrowser
for help on using the repository browser.
